java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label02_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:06:25,600 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:06:25,602 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:06:25,622 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:06:25,622 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:06:25,624 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:06:25,628 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:06:25,631 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:06:25,635 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:06:25,641 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:06:25,642 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:06:25,642 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:06:25,643 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:06:25,647 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:06:25,652 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:06:25,653 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:06:25,656 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:06:25,658 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:06:25,664 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:06:25,666 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:06:25,667 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:06:25,668 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:06:25,673 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 14:06:25,673 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 14:06:25,676 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 14:06:25,677 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 14:06:25,678 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 14:06:25,679 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 14:06:25,680 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 14:06:25,681 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 14:06:25,681 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 14:06:25,682 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 14:06:25,682 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:06:25,682 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:06:25,687 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:06:25,688 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:06:25,688 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 14:06:25,715 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:06:25,715 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:06:25,716 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:06:25,716 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:06:25,717 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:06:25,717 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:06:25,718 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:06:25,718 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:06:25,718 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:06:25,718 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:06:25,718 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:06:25,720 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:06:25,721 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:06:25,721 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:06:25,721 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:06:25,721 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:06:25,721 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:06:25,722 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:06:25,722 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:06:25,722 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:06:25,722 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:06:25,724 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:06:25,724 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:06:25,724 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:06:25,724 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:06:25,725 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:06:25,725 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:06:25,725 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:06:25,725 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:06:25,725 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:06:25,725 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:06:25,726 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:06:25,726 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:06:25,792 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:06:25,806 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:06:25,811 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:06:25,813 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:06:25,813 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:06:25,814 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label02_true-unreach-call.c [2018-07-24 14:06:26,167 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a9d70aa5/31b587e99d9f4506bdadf8efe27fbb09/FLAG4eb44bd8a [2018-07-24 14:06:26,621 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:06:26,622 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label02_true-unreach-call.c [2018-07-24 14:06:26,660 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a9d70aa5/31b587e99d9f4506bdadf8efe27fbb09/FLAG4eb44bd8a [2018-07-24 14:06:26,681 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a9d70aa5/31b587e99d9f4506bdadf8efe27fbb09 [2018-07-24 14:06:26,695 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:06:26,697 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:06:26,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:06:26,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:06:26,707 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:06:26,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:06:26" (1/1) ... [2018-07-24 14:06:26,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a59828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:06:26, skipping insertion in model container [2018-07-24 14:06:26,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:06:26" (1/1) ... [2018-07-24 14:06:27,102 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:06:28,154 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:06:28,171 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:06:28,852 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:06:29,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:06:29 WrapperNode [2018-07-24 14:06:29,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:06:29,118 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:06:29,118 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:06:29,119 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:06:29,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:06:29" (1/1) ... [2018-07-24 14:06:29,223 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:06:29" (1/1) ... [2018-07-24 14:06:29,353 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:06:29,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:06:29,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:06:29,353 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:06:29,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:06:29" (1/1) ... [2018-07-24 14:06:29,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:06:29" (1/1) ... [2018-07-24 14:06:29,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:06:29" (1/1) ... [2018-07-24 14:06:29,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:06:29" (1/1) ... [2018-07-24 14:06:30,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:06:29" (1/1) ... [2018-07-24 14:06:30,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:06:29" (1/1) ... [2018-07-24 14:06:30,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:06:29" (1/1) ... [2018-07-24 14:06:30,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:06:30,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:06:30,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:06:30,251 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:06:30,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:06:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:06:30,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:06:30,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:06:30,331 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:06:30,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:06:30,331 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 14:06:30,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 14:06:30,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:06:30,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:06:30,332 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 14:06:30,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 14:06:30,332 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:06:30,332 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:06:30,333 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 14:06:30,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 14:06:42,627 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:06:42,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:06:42 BoogieIcfgContainer [2018-07-24 14:06:42,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:06:42,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:06:42,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:06:42,632 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:06:42,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:06:26" (1/3) ... [2018-07-24 14:06:42,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b273ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:06:42, skipping insertion in model container [2018-07-24 14:06:42,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:06:29" (2/3) ... [2018-07-24 14:06:42,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b273ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:06:42, skipping insertion in model container [2018-07-24 14:06:42,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:06:42" (3/3) ... [2018-07-24 14:06:42,635 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label02_true-unreach-call.c [2018-07-24 14:06:42,645 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:06:42,654 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:06:42,712 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:06:42,713 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:06:42,713 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:06:42,713 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:06:42,713 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:06:42,713 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:06:42,713 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:06:42,714 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:06:42,714 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:06:42,755 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-07-24 14:06:42,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-07-24 14:06:42,767 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:06:42,768 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:06:42,768 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:06:42,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1036096969, now seen corresponding path program 1 times [2018-07-24 14:06:42,776 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:06:42,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:06:42,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:06:42,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:06:42,829 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:06:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:06:43,312 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-07-24 14:06:43,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:06:43,333 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:06:43,334 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:06:43,334 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:06:43,340 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:06:43,355 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:06:43,355 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:06:43,358 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-07-24 14:06:57,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:06:57,481 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-07-24 14:06:57,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:06:57,485 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2018-07-24 14:06:57,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:06:57,524 INFO L225 Difference]: With dead ends: 3234 [2018-07-24 14:06:57,524 INFO L226 Difference]: Without dead ends: 2388 [2018-07-24 14:06:57,539 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:06:57,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-07-24 14:06:57,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 1604. [2018-07-24 14:06:57,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-07-24 14:06:57,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2600 transitions. [2018-07-24 14:06:57,693 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2600 transitions. Word has length 69 [2018-07-24 14:06:57,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:06:57,695 INFO L471 AbstractCegarLoop]: Abstraction has 1604 states and 2600 transitions. [2018-07-24 14:06:57,695 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:06:57,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2600 transitions. [2018-07-24 14:06:57,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-07-24 14:06:57,708 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:06:57,708 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:06:57,709 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:06:57,709 INFO L82 PathProgramCache]: Analyzing trace with hash -337137106, now seen corresponding path program 1 times [2018-07-24 14:06:57,709 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:06:57,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:06:57,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:06:57,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:06:57,711 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:06:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:06:57,997 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:06:57,998 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:06:57,998 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:06:57,998 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:06:58,000 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:06:58,000 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:06:58,000 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:06:58,001 INFO L87 Difference]: Start difference. First operand 1604 states and 2600 transitions. Second operand 5 states. [2018-07-24 14:07:12,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:07:12,268 INFO L93 Difference]: Finished difference Result 4873 states and 7923 transitions. [2018-07-24 14:07:12,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:07:12,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2018-07-24 14:07:12,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:07:12,307 INFO L225 Difference]: With dead ends: 4873 [2018-07-24 14:07:12,308 INFO L226 Difference]: Without dead ends: 3275 [2018-07-24 14:07:12,314 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:07:12,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2018-07-24 14:07:12,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 3241. [2018-07-24 14:07:12,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3241 states. [2018-07-24 14:07:12,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3241 states to 3241 states and 4816 transitions. [2018-07-24 14:07:12,441 INFO L78 Accepts]: Start accepts. Automaton has 3241 states and 4816 transitions. Word has length 149 [2018-07-24 14:07:12,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:07:12,442 INFO L471 AbstractCegarLoop]: Abstraction has 3241 states and 4816 transitions. [2018-07-24 14:07:12,442 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:07:12,442 INFO L276 IsEmpty]: Start isEmpty. Operand 3241 states and 4816 transitions. [2018-07-24 14:07:12,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-24 14:07:12,447 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:07:12,447 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:07:12,447 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:07:12,448 INFO L82 PathProgramCache]: Analyzing trace with hash -2082458463, now seen corresponding path program 1 times [2018-07-24 14:07:12,448 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:07:12,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:07:12,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:07:12,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:07:12,449 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:07:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:07:12,822 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:07:12,823 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:07:12,823 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:07:12,823 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:07:12,824 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:07:12,824 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:07:12,824 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:07:12,824 INFO L87 Difference]: Start difference. First operand 3241 states and 4816 transitions. Second operand 6 states. [2018-07-24 14:07:27,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:07:27,241 INFO L93 Difference]: Finished difference Result 12870 states and 19656 transitions. [2018-07-24 14:07:27,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:07:27,243 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 178 [2018-07-24 14:07:27,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:07:27,294 INFO L225 Difference]: With dead ends: 12870 [2018-07-24 14:07:27,294 INFO L226 Difference]: Without dead ends: 9635 [2018-07-24 14:07:27,313 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:07:27,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9635 states. [2018-07-24 14:07:27,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9635 to 9567. [2018-07-24 14:07:27,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9567 states. [2018-07-24 14:07:27,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9567 states to 9567 states and 13823 transitions. [2018-07-24 14:07:27,535 INFO L78 Accepts]: Start accepts. Automaton has 9567 states and 13823 transitions. Word has length 178 [2018-07-24 14:07:27,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:07:27,536 INFO L471 AbstractCegarLoop]: Abstraction has 9567 states and 13823 transitions. [2018-07-24 14:07:27,536 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:07:27,536 INFO L276 IsEmpty]: Start isEmpty. Operand 9567 states and 13823 transitions. [2018-07-24 14:07:27,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-24 14:07:27,541 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:07:27,542 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:07:27,542 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:07:27,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1750144377, now seen corresponding path program 1 times [2018-07-24 14:07:27,542 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:07:27,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:07:27,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:07:27,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:07:27,544 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:07:27,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:07:27,853 WARN L169 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:07:28,047 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:07:28,047 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:07:28,048 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:07:28,048 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:07:28,048 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:07:28,049 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:07:28,049 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:07:28,049 INFO L87 Difference]: Start difference. First operand 9567 states and 13823 transitions. Second operand 6 states. [2018-07-24 14:07:38,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:07:38,986 INFO L93 Difference]: Finished difference Result 25915 states and 39231 transitions. [2018-07-24 14:07:38,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:07:38,987 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 190 [2018-07-24 14:07:38,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:07:39,065 INFO L225 Difference]: With dead ends: 25915 [2018-07-24 14:07:39,066 INFO L226 Difference]: Without dead ends: 16354 [2018-07-24 14:07:39,101 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:07:39,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16354 states. [2018-07-24 14:07:39,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16354 to 16174. [2018-07-24 14:07:39,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16174 states. [2018-07-24 14:07:39,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16174 states to 16174 states and 23344 transitions. [2018-07-24 14:07:39,527 INFO L78 Accepts]: Start accepts. Automaton has 16174 states and 23344 transitions. Word has length 190 [2018-07-24 14:07:39,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:07:39,528 INFO L471 AbstractCegarLoop]: Abstraction has 16174 states and 23344 transitions. [2018-07-24 14:07:39,528 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:07:39,529 INFO L276 IsEmpty]: Start isEmpty. Operand 16174 states and 23344 transitions. [2018-07-24 14:07:39,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-07-24 14:07:39,536 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:07:39,536 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:07:39,536 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:07:39,536 INFO L82 PathProgramCache]: Analyzing trace with hash 269885914, now seen corresponding path program 1 times [2018-07-24 14:07:39,537 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:07:39,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:07:39,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:07:39,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:07:39,538 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:07:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:07:39,926 WARN L169 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:07:40,172 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 14:07:40,173 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:07:40,173 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:07:40,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:07:40,371 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:07:40,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:07:40,506 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:07:40,701 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:07:40,701 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:07:41,092 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:07:41,122 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:07:41,122 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2018-07-24 14:07:41,122 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:07:41,123 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:07:41,123 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:07:41,123 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:07:41,123 INFO L87 Difference]: Start difference. First operand 16174 states and 23344 transitions. Second operand 3 states. [2018-07-24 14:07:48,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:07:48,209 INFO L93 Difference]: Finished difference Result 41715 states and 61189 transitions. [2018-07-24 14:07:48,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:07:48,213 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 219 [2018-07-24 14:07:48,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:07:48,372 INFO L225 Difference]: With dead ends: 41715 [2018-07-24 14:07:48,372 INFO L226 Difference]: Without dead ends: 25547 [2018-07-24 14:07:48,454 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 436 SyntacticMatches, 5 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:07:48,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25547 states. [2018-07-24 14:07:49,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25547 to 25542. [2018-07-24 14:07:49,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25542 states. [2018-07-24 14:07:49,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25542 states to 25542 states and 36196 transitions. [2018-07-24 14:07:49,102 INFO L78 Accepts]: Start accepts. Automaton has 25542 states and 36196 transitions. Word has length 219 [2018-07-24 14:07:49,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:07:49,102 INFO L471 AbstractCegarLoop]: Abstraction has 25542 states and 36196 transitions. [2018-07-24 14:07:49,103 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:07:49,103 INFO L276 IsEmpty]: Start isEmpty. Operand 25542 states and 36196 transitions. [2018-07-24 14:07:49,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-07-24 14:07:49,118 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:07:49,119 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:07:49,119 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:07:49,119 INFO L82 PathProgramCache]: Analyzing trace with hash 793951073, now seen corresponding path program 1 times [2018-07-24 14:07:49,119 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:07:49,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:07:49,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:07:49,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:07:49,121 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:07:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:07:49,476 WARN L169 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:07:49,984 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:07:49,985 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:07:49,985 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:07:49,986 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:07:49,987 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:07:49,987 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:07:49,987 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:07:49,988 INFO L87 Difference]: Start difference. First operand 25542 states and 36196 transitions. Second operand 6 states. [2018-07-24 14:08:01,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:08:01,429 INFO L93 Difference]: Finished difference Result 57793 states and 83874 transitions. [2018-07-24 14:08:01,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:08:01,439 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 274 [2018-07-24 14:08:01,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:08:01,555 INFO L225 Difference]: With dead ends: 57793 [2018-07-24 14:08:01,555 INFO L226 Difference]: Without dead ends: 32257 [2018-07-24 14:08:01,603 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:08:01,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32257 states. [2018-07-24 14:08:02,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32257 to 32147. [2018-07-24 14:08:02,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32147 states. [2018-07-24 14:08:02,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32147 states to 32147 states and 44205 transitions. [2018-07-24 14:08:02,254 INFO L78 Accepts]: Start accepts. Automaton has 32147 states and 44205 transitions. Word has length 274 [2018-07-24 14:08:02,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:08:02,255 INFO L471 AbstractCegarLoop]: Abstraction has 32147 states and 44205 transitions. [2018-07-24 14:08:02,255 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:08:02,255 INFO L276 IsEmpty]: Start isEmpty. Operand 32147 states and 44205 transitions. [2018-07-24 14:08:02,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-07-24 14:08:02,272 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:08:02,273 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:08:02,273 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:08:02,273 INFO L82 PathProgramCache]: Analyzing trace with hash -172880270, now seen corresponding path program 1 times [2018-07-24 14:08:02,274 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:08:02,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:08:02,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:08:02,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:08:02,275 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:08:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:08:02,575 WARN L169 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:08:03,430 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 124 proven. 97 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:08:03,430 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:08:03,430 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:08:03,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:08:03,442 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:08:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:08:03,562 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:08:04,031 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-07-24 14:08:04,032 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:08:04,951 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 124 proven. 97 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:08:04,972 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:08:04,973 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 14:08:04,973 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:08:04,974 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:08:04,974 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:08:04,974 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 14:08:04,974 INFO L87 Difference]: Start difference. First operand 32147 states and 44205 transitions. Second operand 5 states. [2018-07-24 14:08:12,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:08:12,558 INFO L93 Difference]: Finished difference Result 70763 states and 99544 transitions. [2018-07-24 14:08:12,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:08:12,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 296 [2018-07-24 14:08:12,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:08:12,681 INFO L225 Difference]: With dead ends: 70763 [2018-07-24 14:08:12,682 INFO L226 Difference]: Without dead ends: 38622 [2018-07-24 14:08:12,749 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 586 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:08:12,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38622 states. [2018-07-24 14:08:13,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38622 to 38572. [2018-07-24 14:08:13,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38572 states. [2018-07-24 14:08:13,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38572 states to 38572 states and 50340 transitions. [2018-07-24 14:08:13,728 INFO L78 Accepts]: Start accepts. Automaton has 38572 states and 50340 transitions. Word has length 296 [2018-07-24 14:08:13,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:08:13,728 INFO L471 AbstractCegarLoop]: Abstraction has 38572 states and 50340 transitions. [2018-07-24 14:08:13,728 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:08:13,728 INFO L276 IsEmpty]: Start isEmpty. Operand 38572 states and 50340 transitions. [2018-07-24 14:08:13,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-07-24 14:08:13,749 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:08:13,750 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:08:13,750 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:08:13,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1533498334, now seen corresponding path program 1 times [2018-07-24 14:08:13,750 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:08:13,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:08:13,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:08:13,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:08:13,751 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:08:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:08:14,159 WARN L169 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 10 [2018-07-24 14:08:14,572 WARN L169 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-07-24 14:08:15,011 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 124 proven. 97 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:08:15,012 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:08:15,012 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:08:15,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:08:15,020 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:08:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:08:15,136 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:08:15,435 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-07-24 14:08:15,560 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-07-24 14:08:15,560 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:08:15,806 WARN L169 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2018-07-24 14:08:16,344 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 124 proven. 97 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:08:16,365 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:08:16,366 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 14:08:16,366 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:08:16,366 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:08:16,367 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:08:16,367 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:08:16,367 INFO L87 Difference]: Start difference. First operand 38572 states and 50340 transitions. Second operand 5 states. [2018-07-24 14:08:27,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:08:27,569 INFO L93 Difference]: Finished difference Result 96492 states and 126714 transitions. [2018-07-24 14:08:27,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-24 14:08:27,570 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 320 [2018-07-24 14:08:27,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:08:27,746 INFO L225 Difference]: With dead ends: 96492 [2018-07-24 14:08:27,746 INFO L226 Difference]: Without dead ends: 57926 [2018-07-24 14:08:27,830 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 636 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2018-07-24 14:08:27,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57926 states. [2018-07-24 14:08:28,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57926 to 56858. [2018-07-24 14:08:28,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56858 states. [2018-07-24 14:08:28,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56858 states to 56858 states and 71740 transitions. [2018-07-24 14:08:28,790 INFO L78 Accepts]: Start accepts. Automaton has 56858 states and 71740 transitions. Word has length 320 [2018-07-24 14:08:28,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:08:28,791 INFO L471 AbstractCegarLoop]: Abstraction has 56858 states and 71740 transitions. [2018-07-24 14:08:28,791 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:08:28,791 INFO L276 IsEmpty]: Start isEmpty. Operand 56858 states and 71740 transitions. [2018-07-24 14:08:28,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-07-24 14:08:28,824 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:08:28,824 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:08:28,824 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:08:28,825 INFO L82 PathProgramCache]: Analyzing trace with hash 784725605, now seen corresponding path program 1 times [2018-07-24 14:08:28,825 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:08:28,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:08:28,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:08:28,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:08:28,826 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:08:28,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:08:29,313 WARN L169 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-24 14:08:30,365 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 265 proven. 170 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:08:30,366 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:08:30,366 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:08:30,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:08:30,374 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:08:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:08:30,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:08:30,986 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 338 proven. 39 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-07-24 14:08:30,986 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:08:31,760 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 196 proven. 239 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:08:31,781 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:08:31,781 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:08:31,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:08:31,799 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:08:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:08:32,125 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:08:32,737 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 338 proven. 39 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-07-24 14:08:32,737 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:08:33,345 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 196 proven. 239 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:08:33,348 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:08:33,348 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9, 9, 9] total 21 [2018-07-24 14:08:33,348 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:08:33,350 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-24 14:08:33,350 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-24 14:08:33,351 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2018-07-24 14:08:33,351 INFO L87 Difference]: Start difference. First operand 56858 states and 71740 transitions. Second operand 16 states. [2018-07-24 14:08:36,490 WARN L169 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2018-07-24 14:09:13,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:09:13,345 INFO L93 Difference]: Finished difference Result 145909 states and 182534 transitions. [2018-07-24 14:09:13,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-24 14:09:13,348 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 396 [2018-07-24 14:09:13,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:09:13,596 INFO L225 Difference]: With dead ends: 145909 [2018-07-24 14:09:13,596 INFO L226 Difference]: Without dead ends: 87952 [2018-07-24 14:09:13,708 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1661 GetRequests, 1603 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=709, Invalid=2153, Unknown=0, NotChecked=0, Total=2862 [2018-07-24 14:09:13,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87952 states. [2018-07-24 14:09:14,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87952 to 86803. [2018-07-24 14:09:14,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86803 states. [2018-07-24 14:09:14,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86803 states to 86803 states and 104640 transitions. [2018-07-24 14:09:14,935 INFO L78 Accepts]: Start accepts. Automaton has 86803 states and 104640 transitions. Word has length 396 [2018-07-24 14:09:14,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:09:14,936 INFO L471 AbstractCegarLoop]: Abstraction has 86803 states and 104640 transitions. [2018-07-24 14:09:14,936 INFO L472 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-24 14:09:14,936 INFO L276 IsEmpty]: Start isEmpty. Operand 86803 states and 104640 transitions. [2018-07-24 14:09:14,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-07-24 14:09:14,964 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:09:14,965 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:09:14,965 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:09:14,965 INFO L82 PathProgramCache]: Analyzing trace with hash 771424511, now seen corresponding path program 1 times [2018-07-24 14:09:14,965 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:09:14,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:09:14,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:09:14,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:09:14,967 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:09:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:09:15,410 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 390 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 14:09:15,411 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:09:15,411 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:09:15,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:09:15,426 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:09:15,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:09:15,576 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:09:15,810 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 390 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 14:09:15,811 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:09:16,068 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 390 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 14:09:16,505 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:09:16,505 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:09:16,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:09:16,524 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:09:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:09:16,846 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:09:16,987 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 390 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 14:09:16,987 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:09:17,253 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 390 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 14:09:17,256 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:09:17,256 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 14 [2018-07-24 14:09:17,256 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:09:17,258 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 14:09:17,259 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 14:09:17,259 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-07-24 14:09:17,259 INFO L87 Difference]: Start difference. First operand 86803 states and 104640 transitions. Second operand 7 states. [2018-07-24 14:09:42,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:09:42,153 INFO L93 Difference]: Finished difference Result 217825 states and 304322 transitions. [2018-07-24 14:09:42,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-24 14:09:42,153 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 422 [2018-07-24 14:09:42,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:09:42,826 INFO L225 Difference]: With dead ends: 217825 [2018-07-24 14:09:42,826 INFO L226 Difference]: Without dead ends: 131796 [2018-07-24 14:09:43,188 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1706 GetRequests, 1686 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2018-07-24 14:09:43,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131796 states. [2018-07-24 14:09:45,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131796 to 130253. [2018-07-24 14:09:45,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130253 states. [2018-07-24 14:09:45,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130253 states to 130253 states and 165568 transitions. [2018-07-24 14:09:45,772 INFO L78 Accepts]: Start accepts. Automaton has 130253 states and 165568 transitions. Word has length 422 [2018-07-24 14:09:45,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:09:45,773 INFO L471 AbstractCegarLoop]: Abstraction has 130253 states and 165568 transitions. [2018-07-24 14:09:45,773 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 14:09:45,773 INFO L276 IsEmpty]: Start isEmpty. Operand 130253 states and 165568 transitions. [2018-07-24 14:09:45,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2018-07-24 14:09:45,810 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:09:45,810 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:09:45,811 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:09:45,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1091764124, now seen corresponding path program 1 times [2018-07-24 14:09:45,811 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:09:45,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:09:45,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:09:45,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:09:45,812 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:09:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:09:47,088 WARN L169 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 7 [2018-07-24 14:09:47,788 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 328 proven. 65 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-07-24 14:09:47,789 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:09:47,789 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:09:47,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:09:47,796 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:09:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:09:47,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:09:50,759 WARN L169 SmtUtils]: Spent 2.48 s on a formula simplification. DAG size of input: 125 DAG size of output: 41 [2018-07-24 14:09:51,203 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 328 proven. 65 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-07-24 14:09:51,204 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:09:51,478 WARN L169 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2018-07-24 14:09:51,858 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 328 proven. 65 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-07-24 14:09:51,878 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:09:51,879 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:09:51,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:09:51,897 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:09:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:09:52,247 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:10:13,030 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:10:13,032 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:222) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:102) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.pop(WrapperScript.java:106) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.UndoableWrapperScript.pop(UndoableWrapperScript.java:58) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:67) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:626) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:122) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:191) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:575) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:185) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:217) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:220) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:194) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:406) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:425) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:367) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:309) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:151) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:119) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) ... 46 more [2018-07-24 14:10:13,036 INFO L168 Benchmark]: Toolchain (without parser) took 226340.58 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -338.0 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-07-24 14:10:13,037 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 14:10:13,037 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2417.97 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-07-24 14:10:13,038 INFO L168 Benchmark]: Boogie Procedure Inliner took 234.60 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-24 14:10:13,039 INFO L168 Benchmark]: Boogie Preprocessor took 897.32 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 918.0 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. [2018-07-24 14:10:13,043 INFO L168 Benchmark]: RCFGBuilder took 12376.89 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 156.8 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -139.5 MB). Peak memory consumption was 732.8 MB. Max. memory is 7.1 GB. [2018-07-24 14:10:13,045 INFO L168 Benchmark]: TraceAbstraction took 210406.80 ms. Allocated memory was 2.6 GB in the beginning and 4.0 GB in the end (delta: 1.4 GB). Free memory was 2.4 GB in the beginning and 1.7 GB in the end (delta: 694.3 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-07-24 14:10:13,051 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2417.97 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 234.60 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 897.32 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 918.0 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12376.89 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 156.8 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -139.5 MB). Peak memory consumption was 732.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210406.80 ms. Allocated memory was 2.6 GB in the beginning and 4.0 GB in the end (delta: 1.4 GB). Free memory was 2.4 GB in the beginning and 1.7 GB in the end (delta: 694.3 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label02_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_14-10-13-066.csv Received shutdown request...